This frame grab from video provided by the Revolutionary Forces of Syria, an opposition activist media organisation, is consistent with independent AP reporting and shows an airstrike on the village of Hass, Syria. The death toll has been put at 28.Uncredited

Syrian school bombing 'an outrage'

UNICEF, the United Nations children's agency, has called air strikes in Syria's northern Idlib province an "outrage”, labelling them the deadliest attack on a school in the six years of the war. The attack killed 22 children and six of their teachers. The series of air strikes on Hass (pictured) in the rebel-held territory hit a residential area's school on Wednesday as children gathered outside. The toll is expected to rise as rescue efforts continue. Two schools in the area were hit with a total of 11 air strikes that the White House blamed on Russia or Syria.